Improvement in nailand spike extractors



W. H. BARWIGK'. Nail and Spike Extractor. No. 202,098. Patented Aug. 20,1878.

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UNITED STATES PATENT OFFICE.

WVILLIAM H. BARWIOK, OF HYDE PARK, MASSACHUSETTS.

IMPROVEMENT IN NAILAND SPIKE EXTRACTORS.

Specification forming part of Letters Patent No. 207,098, dated August 20, 1878 application filed December 24, 1877.

To all whom it may concern:

Be it known that I, WM. H. BARWIGK, of Hyde Park, in the county of Norfolk and State of Massachusetts, have invented certain new and useful Improvements pertaining to a Nail and Spike Extractor, of which the following is a specification, reference being had to the accompanying drawings, Where- Figure 1 is a perspective view. Fig. 2 is a side view, showing the claw end of the fulcrum-block in section.

The letter a denotes a fulcrum-block; b, a claw-lever, pivoted in the fulcrum-block; and c, a claw and handle lever, pivoted to the claw-lever b.

Fig. 2 shows the method of grasping a nail or spike head with this device, and Fig. 1 shows the nail or spike extracted by lifting on lever B.

The fulcrumblock is made at its fore end with claws d, adapted to make an impression in the wood each side of the head of the nail, to enable the jaw-points to get a gripe upon the nail.

It will be noticed that the fulcrum-block is stationary during the operation of extracting the nail, &c., and that the connecting-lever plays upon its pivot therein as upon a fixed center, thereby moving in the are of a circle, and having an invariable radius, so as to facilitate the pnllin g of the nail.

In all the extractors with which I am acquainted the fulcral point is movable or constantly changing.

I claim as my invention- The within-described nail extractor, consisting of the fulcrum-block, its claws d, the connecting jaw-lever, and the handle jaw-1e ver, constructed and arranged as set forth, the

said levers moving upon the fulcrum-block as from afixed center, and with an invariable radius, as shown, substantially as and for the purpose specified.

WM. 11. BARVVIO K.

Witnesses:

LUOIEN A. GIIAPIN, FRED. A. TAFT. 

